Bed spring



FIG. 1 is a top, front, right side perspective view of a bed springshowing our new design;

FIG. 2 is a bottom, rear, left side perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof,

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a right side elevational view thereof;

FIG. 9 is a top, front, right side perspective view of an alternate bedspring showing our new design;

FIG. 10 is a bottom, rear, left side perspective view thereof;

FIG. 11 is a rear elevational view thereof;

FIG. 12 is a front elevational view thereof;

FIG. 13 is a top plan view thereof,

FIG. 14 is a bottom plan view thereof;

FIG. 15 is a left side elevational view thereof; and,

FIG. 16 is a right side elevational view thereof.

CLAIM The ornamental design for a bed spring, as shown and described.